The phrase "despicable person" refers to someone who is highly disliked or hated by others because they behave in a terrible, cruel, or dishonest way. Full definition
Oogy was a puppy used as bait by despicable people who were conducting dog fights. (tulsapetsmagazine.com)
Disappointed with the result, disappointed with making a lot of despicable people happy, disappointed our fans went home on that freezing night empty - handed. (gunnerstown.com)
By now the news is stale, but on Friday Heartland pulled down the highly offensive billboards comparing the acceptance of mainstream climate science with such despicable people as the Unabomber. (planet3.org)